I just can't believe that the only foods on campus are the ones you mentioned. I would believe that those are the predominant foods in college students' pantries.
Is there no grocery store near campus? Where do you go to school, anyway?
With finals coming up, I'd say F it, because those are really the hardest times to eat well (though probably also the most crucial that you do). When you start the spring semester, start it off with a bang by having only primal things in your residence, and make healthy choices when you have to eat out. Eat bun-less burgers, and ask for veggies instead of fries (or extra meat, ha). Quality of campus meat is questionable, but it's better than eating pop and pastries.
Everything in moderation, including moderation.